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In the tree view, click Piping > Piping Specification > Model Rules > Fluid Density Rule.
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Click the Insert Row Command
to insert a blank row in the grid view.
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In the Fluid Code column, enter the fluid code short description for which to define a density.
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Specify the temperature range for the fluid density. Include the temperature unit, for example F or C, when defining this range.
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In the Density column, enter the fluid density. Be sure to include the units of measure, for example lbm/ft^3 or kg/m^3, when specifying this value.
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The fluid code short descriptions are defined in the Fluid Code select list under the Select Lists branch in the Catalog tree view. For cryogenic liquids and compounds that can change phases, you must define a different fluid code, and thus a different density, for each of the different phases.
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The Fluid Density Rule sheet in the Piping Specification.xls workbook corresponds to the Fluid Density Rule node. See Piping Reference Data.